Sand conditioning apparatus



Aug, 8, 1952 J. H. SEELING 2,607,439

SAND CONDITIONING APPARATUS Filed Feb. 2, 1950 2' SHEETS-SHEET 1 J 11.15eezirg INVENTOR I I v I I I ATTORNEYS Aug. 19, 1952 .1. H. SEELINGSANDCONDITIONING APPARATUS 2 Sl-lEETS-SHEET 2 Filed Feb. 2, 1950 Jeelz'ng INVENTOR ATTORNEYS UNITED sTArEs Patented Aug. 19,1952 a r 2,607,489SAND CONDITIONING APPARATUS f 1 John Herman Seeling, La Crsse,:Wis.Application February 2, 1950, Serial No. iciaims. 01. 209262) v a Thisinvention-relates tosand conditioning ap- Rigidly secured to the'undersideS of thechanparatus, adapted particularly-for useinfoundriesnel members 1, and extending, transversely thereor similarestablishments, but equally serviceable between, is the inclined; scrapslide lfl of plate in the conditioning of sand for otherp'iirposesmaterial, that defines Va steeply inclined scrap An object ofthe invention isto provide an imslide the inlet end of whichislat theupper end of proved sand conditioning apparatus wherein sand said slide,the outlet endof 'the slide being discan be dropped into a hopper, andwherein said posed at the lower end thereoli so that scrap fed sanddrops to a power-driven impeller of the through the inlet end of theslide'will'gravitate conveyor type, from one end of which the sandswiftly therethrough for discharge at the bottom is thrown with greatforce through a screen, end of the slide.

thus to effectively screen the sand while providing The scrap slide? I0is integrally formed t its for the discharge by gravity of the scrapremainupper end with anlup'wardly' and backwardly ing after theoperation. curved wall I I the upper portions of which is With theforegoing and other objectsin view formed with a large openingin which;is mounted which will appear as the description proceeds, the a screenI2. Y invention consists of certain novel details of con- Mounted uponthe channel members 1 adjacent struction and combinations of parts,hereinafter the upper ends thereof are the bearings l3 in more fullydescribed and pointed out in the which are 'journaled a, transverselyextending claims, it being understood that changes may be roller shaftl4 having mountedtliereon for rota made in the construction andarrangement of tion by said shaft, the 'ro11er 5 u1 -i mg the belt partswithout departing from the spirit of the IS on which are' providedspaced cleats .l'L's aid invention as claimed. belt being disposedparallel to andspaced a suit- Referring to the drawings: able distanceabovethe inclinedscrap slide I ll,

Fig. 1 is a vertical section takenlongitudinally with the upper courseof thebelt being located through apparatus formed in accordance withbelow the upper end of said wallll so that the the invention. belt willfeed sand to be conditioned into .the area Fig.2is atopplanview. of thescreen 12. I f Fig. 3 is an enlarged section on line 3-3 of The bottomend of the endless belt leis passed Fig. 1. around the idler roller I8mounted upon the shaft Fig. 4 is an enlarged section on line 4-4 of I9journaled in the bearings 2i! that are mounted Fig. 1. upon the bottomends of thechannelmembers 1. Referring to the drawings in detail, Iprovide For the purpose of driving the belt, I provide a wheeledsupporting frame including the horithe motor 2| which can be mountedupon a platzontal longitudinally extending parallel side rails formextended transversely between and sup I of angle iron or other suitablebar stock, these ported upon the lower rails l, there being securedbeing rigidly connected at one end by the cross to the shaft of themotor a small drive pulley 22 bar 2 of angle iron or other suitablematerial. around which passes the belt23 that also passes Adjacent theiro-ther'ends, the'side rails l suparound the larger driven pulley 24mounted upon port bearings 3 in which are journaled the opand rotatingthe shaft HI posite ends of the axle 4 on the ends of which are For thepurpose of adjustably tightening the mounted the wheels 5. belt I6, thebearings 20 are adjustably positioned, Rigidly secured to the respectivefirst-named and can be repositioned by means of adjusting ends of theside rails l, and extending upwardly screws 25 mounted, upon' thechannelmembers therefrom, at a slight angle from the perpendicu- 1adjacent said bearings 20." v I lar, are the inclined supports 6 ofsuitable bar A plurality of upstanding supports Zliisrigidly stock, tothe upper ends of which are rigidly consecured to .therespective'jchannel members 1 and nected the upper ends of steeplyinclined upper extends upwardly from said channel members, side rails Iof channel iron material, which, as these supports 26 being rigidlysecured to and readily seen from Fig. l, are inclined at a steep suporting a box-like hopper 21 which is angle, e IOWBI s of Said pp Siderails 7 mounted an inclined deflection board 28 which rebeing rigidlyconnected to the lower side rails lstricts the opening at the'bottom ofthe hopper A front cover plate *8 extends across o e d of to asubstantially narrow opening positioned imthe machine, between theangularly extend mediately above the lower end .of the belt l6, assupports 6, while one side of the frame can be readilyseenfromFig,1

covered by a side cover plate '9. As seen from Fig. 1, the upper end ofthe front From what has been so far described, it will wall ll formedupon the scrap slide l ll terminates be seen that I provide a rollablymounted supshort of the front wall of the hopper 21, so as porting framefor my apparatus, the upper side to provide a spacethrough which canswing a of the frame, defined by the'rails 1, being steeply hingedbaille, there 'being provided piv.ot bolts inclined for a purpose tobecome apparent hsre- 50 29 passed through ears 3fl'formed upon thefront inafter. 7 wall of the hopper, the pivot bolts pivotallyconnecting tosaid hopper the bafiie 3| provided with 1 the weight 32.

Secured to the respective channel members 7 and extending between thebelt rollers is the plate 33 disposed just above the bottom flight ofthe conveyor belt, this plate being formed at oppo site ends with theupstanding end walls 34 and 35 respectively covering the surfaces of therespective rollers. Supporting the entire apparatus in proper positionfor use is the stand 36 connected to the cross bar 2. Thiscooperateswith the wheels in supporting the apparatus in the 1 positionillustrated in Fig. 1. 7 Considering now the manner of use of the sandconditioning apparatus, itwill be noted that the apparatus isreadilyportable, and can be rolled upon the wheels 5'to any location.After the apparatus has been-positioned at the desiredlocation, sand isshoveled or otherwise fed into from said upper end of the belt withgreat force against the screen l2, with the conditioned sand passingthrough said screen, while the scrap remaining continues to travel alongthe curved surface of the 'front-wal1 H, so that it is fed withconsiderable velocity through the inlet end of the downwardly inclinedscrap slide 6, being discharged at the lower end of said. slide. 1

In this connection,,the hinged baiile 34 extends downwardly across thepath of the sand to be conditioned, so as to provide a yieldableleveling means for said sand located immediately in advance of the pointat which the sand is impelled at high speed from the conveyor. Thebaffle '31, as will beappreciated, will yield as necessary to thepassage of large objects, by reason of its weighted hinged arrangement.A considerable amount of sand is adapted to be conditioned in thismanner, and it will be appre ciated that the scrap discharged from thebottom end of the scrap slide can if desired be fed once again throughthe hopper 27, to condition the sand still further.

What is claimed is: r a 1. Sand conditioning apparatus including asupporting frame the upper surface of which, is inclined, a scrap slidemounted upon said inclined upper-surface and including an upwardly andbackwardly curved front wall, a screen in said front wall of the scrapslide, an impeller belt mounted above the scrap slide and positioned todischarge material through'said screen, a hopper mountedupon the frameabovesaidbelt, for feeding material-to the belt, and means for drivingthe belt at high speed, thus to cause material to be conditioned to becarried upwardly by said belt and discharged :with velocity against saidscreen, whereby 1 conditioned sand will pass through the screen andscrap will gravitate for discharge through the inclined scrap slide,said screen being disposed wholly out of the path of said gravitatingscrap material, whereby to limit passage through the screen to materialdischarged upwardly thereagainst. j

2. Sand conditioning apparatus including an inclined'supporting frame,aninclined scrap slide ounted thereon, a screen m u t h upper end of saidscrap slide, an endless cleated conveyor belt mounted upon the frameabove said slide and inclined correspondingly to the slide,

a hopper positioned to discharge material into the bottom end of theconveyor to be carried upwardly by the conveyor toward the screen, andmeans for driving the conveyor at high speed, thus to cause the materialcarried upwardly thereby to be impelled with substantial velocityagainst the screen, said screen being located to provide a deflectionmeans for scrap denied passage through the screen, defiecting said scrapto the upper end of the inclined scrap slide, said screen being disposedwholly out of the path of said gravitating scrap material, whereby tolimit passage through the screen to .material discharged upwardlythereagainst.

, 3. Sand conditioning apparatus comprising a wheeled supporting framehaving a pair of spaced parallel steeply inclined upper side rails,

:a conveyor slide extending between and secured to said side rails, saidslide comprising a solid plate covering the entire space between theside rails, an arcuate deflection wall integral with the upper end ofsaid plate and inclined upwardly and backwardly from said upper end ofthe plate, said deflection wall having an opening of substantial size, ascreen covering said opening and curved correspondingly to said wall,said screen comprising the upper portion of said deflection wall, thelower portion of said wall being imperforate and being formed as acurved extension of the screen, spaced conveyor rollers extendingtransversely between the rails and mounted upon said rails andpositioned above said scrap slide, an endless cleated conveyor beltextending around said rollers and inclined correspondingly to and spacedabove the scrap slide, means for driving said belt at high speed, and ahopper mounted upon the frame and having a discharge opening for feedingmaterial to the conveyor belt at the bottom of the top flight of saidconveyor belt, the upper end of said top flight of the conveyor beltbeing located in back of the screen so as to impel sand to beconditioned at high speed against said screen, scrap materialbeingdeflected by the screen to the up per end of said inclined scrap slide,said screen terminating at its lower end above the path of materialgravitating to said slide, whereby to limit passage through the screento material impelled upwardly thereagainst.

, 4. Sandconditionin apparatus as in claim 3, and wherein said apparatusincludes a hinged Weighted baflle mounted upon the hopper adjacent theupper end of said top flight of the conveyor belt, in the path of sandto be conditioned.

- JOHN HERMAN SEELING.

REFERENCES CITED Thefollowing references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 463,305 Hofi'man Nov. 17, 1891773,928 Colvin -c Nov. 1, 1904 786,184 Benefield Mar. 28, 1905 1,333,127Nall Mar. 9, 1920 2,260,095 Stevens Oct. 21, 1941 FOREIGN PATENTS NumberCountry Date 19,065 Switzerland Mar. 29, 1899 242,592 Germany Jan. 13,1912

